CN106154717A - Light supply apparatus and there is its optical projection system - Google Patents

Light supply apparatus and there is its optical projection system Download PDF

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Publication number
CN106154717A
CN106154717A CN201510184672.7A CN201510184672A CN106154717A CN 106154717 A CN106154717 A CN 106154717A CN 201510184672 A CN201510184672 A CN 201510184672A CN 106154717 A CN106154717 A CN 106154717A
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China
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light
optical filter
reflection
stimulated luminescence
filter
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CN201510184672.7A
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Chinese (zh)
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CN106154717B (en
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王则钦
郭祖强
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深圳市光峰光电技术有限公司
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Publication of CN106154717B publication Critical patent/CN106154717B/en

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Abstract

The invention discloses a kind of light supply apparatus, including the excitation source for producing exciting light and the Wavelength converter being arranged in the propagation light path of exciting light, Wavelength converter includes echo area and wavelength-converting region, wavelength-converting region has the material for transformation of wave length of the stimulated luminescence for the exciting light of reception is converted into preset wavelength, and described light supply apparatus also includes: be successively set on the polarizer in the light path between excitation source and Wavelength converter, polarization conversion assembly and filter set.The invention also discloses a kind of optical projection system.Pass through technique scheme, exciting light can be separated with the light path of stimulated luminescence, exciting light in stimulated luminescence can be filtered compared to prior art without arranging filter wheel, have that overall structure is simple, arrangement form is compact, production cost is low and high reliability.

Description

Light supply apparatus and there is its optical projection system

Technical field

The present invention relates to projection display technique field, particularly relate to a kind of light supply apparatus and there is its projection System.

Background technology

In existing projector light source, general employing fluorescence colour wheel provides sequence of colored lights, by inciting somebody to action The most homochromy section of fluorescence colour wheel alternately and is periodically arranged on the propagation path of exciting light, and then utilizes sharp Luminescence excites the material for transformation of wave length on the most homochromy section of fluorescence colour wheel, to produce the fluorescence of different colours. But, spectral region produced by material for transformation of wave length is wider so that the excitation of part fluorescence is not Foot, and then cause the colour gamut of light source the biggest.Meanwhile, reflect because of the surface of material for transformation of wave length or excite Not exclusively, have a fraction of exciting light all the time and be reflected together along with stimulated luminescence, this portion Divide the exciting light being reflected that the chromaticity coordinates of stimulated luminescence is deteriorated, the colour gamut of light source also can be made to contract Little.

In more existing solutions, frequently by the filter of configuration one with fluorescence colour wheel synchronous rotary Exciting light in light path is filtered by halo, can also prune the spectrum of stimulated luminescence simultaneously. Although solving, by the method increasing synchronous rotary filter wheel, the problem that spectrum is pruned, to a certain extent Improve quality of colour, but filter wheel is easy by extraneous factor shadow with the precise synchronization rotation of fluorescence colour wheel Ringing, global reliability is relatively low, and the light supply apparatus of this framework too increases cost, is unfavorable for product Popularization and application.

Foregoing is only used for auxiliary and understands technical scheme, does not represent and recognizes that foregoing is Prior art.

Summary of the invention

Present invention is primarily targeted at a kind of light supply apparatus of offer, it is intended to solve in existing light supply apparatus Because of need to arrange with the filter wheel of fluorescence colour wheel synchronous rotary and cause reliability to reduce and the high technology of cost is asked Topic.

For achieving the above object, the present invention provides a kind of light supply apparatus, including for producing swashing of exciting light Luminous source and the Wavelength converter being arranged in the propagation light path of described exciting light, described wavelength convert fills Put the exciting light conversion including that echo area and wavelength-converting region, described wavelength-converting region have for receiving Becoming the material for transformation of wave length of the stimulated luminescence of preset wavelength, described light supply apparatus also includes: be successively set on The polarizer in light path between described excitation source and described Wavelength converter, polarization conversion assembly And filter set, wherein: described polarizer transmission has the light of the first polarization state, and reflect and have the The light of two polarization states, described first polarization state is identical with the polarization state of described exciting light, described second polarization State is vertical with described first polarization state;Described polarization conversion assembly will have twice warp of light of a kind of polarization state The light of the another kind of polarization state vertical with described a kind of polarization state it is converted into after crossing described polarization conversion assembly; Exciting light described in described filter set transmission, and reflect described stimulated luminescence.The technical program is without arranging Filter wheel can filter exciting light in stimulated luminescence, has that overall structure is simple, arrangement form is compact, raw Produce low cost and high reliability.

Preferably, described excitation source is the blue light solid state light emitter producing blue wave band light.Use blue ripple Duan Guang compares safer with uv excitation light as excitation source, and light source can between utilize, reduce ripple Loss during long conversion.

Preferably, described polarization conversion assembly includes quarter wave plate and diaphragm, described quarter wave plate and described light Door screen is wholely set;Or, described quarter wave plate is arranged with described diaphragm split, described quarter wave plate or described Diaphragm is arranged adjacent to described polarizer.Utilize quarter wave plate that the polarization state of light is changed, light channel structure Simply, reliability is high, prunes light beam in combination with diaphragm, can be to exciting light and stimulated luminescence Separate.

Preferably, described filter set includes that one first optical filter, described first optical filter reflect described ripple The stimulated luminescence that the excitation of long switch region produces, and the exciting light that excitation source described in transmission produces.This technology Scheme uses the first optical filter exciting light and stimulated luminescence to be separated, it is possible to realize last outgoing actinic light, This structure is simpler.

Preferably, described light supply apparatus also includes: be arranged on being excited via described first optical filter reflection The luminous reflection device in light path;With, second in the light path of the light reflected via described polarizer Optical filter, described second optical filter reflects the light reflected via described polarizer, and reflects described in transmission The stimulated luminescence of device reflection.The technical program carries out closing light by use reflection device and the second optical filter, Simple in construction, dependable performance.

Preferably, described light supply apparatus also includes the 3rd optical filter and/or diffusion sheet, described 3rd optical filter Being arranged in the light path between described first optical filter and described reflection device, described diffusion sheet is arranged on institute State in the light path between polarizer and described second optical filter.Through the colour filter of the 3rd optical filter, permissible The excitation of raising yellow band light, thus HONGGUANG and the excitation of green glow when improving Projection Display.

Preferably, described light supply apparatus also includes: the 4th optical filter, and described 4th optical filter reflection is described First band light in stimulated luminescence, and exciting light described in transmission and the second band in described stimulated luminescence Light;5th optical filter, the second band light in the described 5th optical filter described stimulated luminescence of reflection, and thoroughly Penetrate described exciting light.By the 4th optical filter, red band light is repaiied color, by the 5th optical filter pair Green band light carries out repairing color, thus improves red band light and the excitation of green band light, Jin Erti The excitation of yellow band light after Gao Heguang.

Preferably, described light supply apparatus also includes: be arranged on being excited via described 4th optical filter reflection Reflection device in the light path of the first band light in luminescence;It is arranged on via described 5th optical filter reflection Stimulated luminescence in second band light light path on the 6th optical filter, described 6th optical filter reflection warp By the second band light in the stimulated luminescence of described 5th optical filter reflection, and described in transmission, reflection device is anti- First band light in the stimulated luminescence penetrated;With, it is arranged on the light of the light reflected via described polarizer The 7th optical filter on road, the light that described 7th optical filter reflection is reflected via described polarizer, and thoroughly Penetrate the second band light in the stimulated luminescence via described 6th optical filter reflection and via described 6th optical filtering First band light in the stimulated luminescence of sheet transmission.The technical program is by using reflection device, the 6th filter Mating plate and the 7th optical filter carry out closing light, simple in construction, dependable performance.

Preferably, described light supply apparatus also include being arranged on described polarizer and described 7th optical filter it Between light path on diffusion sheet.The exciting light diffusion utilizing diffusion sheet to concentrate, forms a uniform face Light source, has higher projection quality.

Preferably, described wavelength-converting region is gold-tinted switch region;Or, described wavelength-converting region is divided into Two sections, be peripherally disposed HONGGUANG switch region and green glow switch region respectively.

Preferably, described echo area is direct reflection district.To realize the exciting light received is pressed former polarization state Reflection.

Preferably, described light supply apparatus also includes being arranged on described filter set and described Wavelength converter Between light path on collimating element.By by stimulated luminescence big for etendue quantitative change through collimating element Collimation, thus can reduce the loss of stimulated luminescence, to improve output rating and the beam quality of light.

Additionally, for achieving the above object, the present invention also provides for a kind of optical projection system, including any of the above-described item Light supply apparatus described in technical scheme.

A kind of light supply apparatus provided by the present invention and optical projection system, by excitation source and wavelength convert Arrange by optical element groups such as polarizer, polarization converter, filter set in light path between device The light-dividing device become, it is thus possible to separate exciting light with the light path of stimulated luminescence, compared to existing skill Art can filter exciting light in stimulated luminescence without arranging filter wheel, has that overall structure is simple, arrange shape Formula is compact, production cost is low and high reliability.

Accompanying drawing explanation

Fig. 1 is the structural representation of the light supply apparatus first embodiment of the present invention;

Fig. 2 is the structural representation of light supply apparatus second embodiment of the present invention;

Fig. 3 is the structural representation of light supply apparatus the 3rd embodiment of the present invention;

Fig. 4 is the structural representation of Wavelength converter the first embodiment in the light supply apparatus of the present invention;

Fig. 5 is the structural representation of Wavelength converter the second embodiment in the light supply apparatus of the present invention.

The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further Explanation.

Detailed description of the invention

Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit Determine the present invention.

The present invention provides a kind of light supply apparatus, sees Fig. 1, in the first embodiment, and this light supply apparatus 100 Including for producing the excitation source 101 of exciting light and being arranged in the propagation light path of this excitation source 101 Wavelength converter 102.Exciting light produced by the excitation source 101 of the present embodiment is blue wave band light, Concretely blue light solid state light emitter, such as blue light-emitting diode or blue laser.

Wherein, Wavelength converter 102 includes echo area and wavelength-converting region, echo area and wavelength convert District is formed on the discoideus or base material of circulus, and wavelength convert can be distinguished into by the circumference along base material Multistage, when wavelength-converting region is divided into multistage, each section of wavelength-converting region is respectively provided with different ripples Long transition material (this material for transformation of wave length can be fluorescent material or nano material), thus can be by reception Exciting light is converted into the stimulated luminescence of preset wavelength, and (stimulated luminescence of described preset wavelength refers to as required The color of material for transformation of wave length is set, thus obtains being stimulated of required wavelength when it is excited Light).Seeing Fig. 4, as example, Wavelength converter 102 includes echo area 102a and gold-tinted switch region Exciting light incident thereon can be reflected by 102b, echo area 102a by former propagation path, wherein echo area 102b is direct reflection district, is such as reflecting mirror, is therefore reflected by former polarization state by the exciting light received, Exciting light incident thereon can be converted to the fluorescence of yellow band by gold-tinted switch region 102b, and (gold-tinted is excited Luminous).It should be noted that gold-tinted switch region 102b can also be turned by green light switch region or magenta light Change district to substitute, projection or the lighting source that can show full-colour image is thus provided.Additionally, this light source dress Put 100 driving means 103 also including being arranged on Wavelength converter 102 rear, this driving means 103 Can be made up of motor and power transmission shaft, power transmission shaft is connected with Wavelength converter 102 to drive wavelength convert dress Put 102 to rotate by specific rotation speeds, due to the rotation of Wavelength converter 102, from excitation source 101 Exciting light time-division illumination on echo area 102a and gold-tinted switch region 102b.It addition, driving means 103 Other any suitable version, such as driving means 103 can also be used only to include motor, motor Output shaft be connected between Wavelength converter 102.

As it is shown in figure 1, the light supply apparatus 100 of the present embodiment also includes being successively set on excitation source 101 And polarizer 104, polarization conversion assembly P and filter set S in the light path between Wavelength converter, And this polarizer 104 is arranged adjacent to excitation source 101, by above polarizer 104, polarization conversion The light-dividing device that assembly P and filter set S are constituted, it is possible to the light path of exciting light with stimulated luminescence is carried out Separate, so that the exciting light in stimulated luminescence is filtered, from without the chromaticity coordinates of emergent light is impacted. Specifically, polarizer 104, polarization conversion assembly P and filtering assembly S are arranged on excitation source 101 And in the light path between Wavelength converter 102, namely lead to successively from the exciting light of excitation source 101 Crossing polarizer 104, polarization conversion assembly P and filter set S, polarizer 104 transmission has first The light of polarization state, and reflect there is the light of the second polarization state, and the polarization of the first polarization state and exciting light State is identical, and the second polarization state is vertical with the first polarization state;Polarization conversion assembly P will have a kind of polarization state Light after this polarization conversion assembly P, be converted into vertical with this kind of polarization state another kind of polarization for twice The light of state, plays the effect of the polarization state of conversion light;Filter set S transmission exciting light, and reflection be excited Luminous.

In the present embodiment, corresponding with above-mentioned gold-tinted switch region 102b, filter set S includes that one first filters Mating plate 105, and the first optical filter 105 reflect by gold-tinted switch region 102b excitation produce stimulated luminescence, And the exciting light that transmission excitation source 101 produces.In alternate embodiments, polarization conversion assembly P bag Including quarter wave plate 107 and diaphragm 108, wherein quarter wave plate 107 and diaphragm 108 can be wholely set, Can also be that split is arranged, such as quarter wave plate 107 be arranged adjacent to polarizer 104 or diaphragm 108 is neighbouring Polarizer 104 is arranged, and utilizes quarter wave plate 107 to change the polarization state of light, and recycling diaphragm 108 is right Light beam is pruned, and the clear aperature of diaphragm 108 can be arranged according to its beam size to be limited, right This is not restricted.The blue light exciting light produced with excitation source 101 is as line polarized light, and to arrange this line The polarization state of polarized light is to illustrate as a example by P polarization, and the exciting light that excitation source 101 produces is by 1/4 Wave plate 107 is converted to circularly polarized light and reenters and be incident upon on Wavelength converter 102.Along with Wavelength converter The rotation of 102, wherein:

By anti-when the stimulated luminescence produced by gold-tinted switch region 102b excitation is incident on the first optical filter 105 Penetrate;

The exciting light reflected by echo area 102a returns along its incident path, does not change the polarization state of exciting light, Exciting light elder generation transmission the first optical filter 105 reflected by echo area 102a, then by quarter wave plate 107 turns Being changed to line polarized light, this line polarized light is mutually perpendicular to the polarization state of the exciting light that excitation source 101 produces, The i.e. polarization converted of this line polarized light is S-polarization, and the exciting light being so reflected district 102a reflection is entering Can be reflected when being incident upon on polarizer 104, thus achieved gold-tinted switch region 102b excitation generation Stimulated luminescence separates with the light path of the exciting light that echo area 102a reflects;And

By the exciting light of gold-tinted switch region 102b reflection, (generally this part exciting light is material for transformation of wave length Surface is reflected and is not excited generation) in scattering state, etendue amount increases many times, the most yellow The exciting light major part of light switch region 102b reflection is by the stop of diaphragm 108, after diaphragm 108 Exciting light is made up of the polarized light of P polarization state and S-polarization state, is therefore being incident on polarizer 104 Time by part or all of transmission, thus achieve stimulated luminescence that 102b excitation in gold-tinted switch region is produced with The light path of the exciting light of gold-tinted switch region 102b reflection separates.Therefore, in conjunction with above-mentioned gold-tinted switch region 102b The light path isolating construction of the exciting light that the stimulated luminescence that excitation produces reflects with echo area 102a, can be by light Exciting light in source apparatus 100 separates with the light path of stimulated luminescence, has that overall structure is simple, cloth Form of putting is compact, production cost is low and high reliability.Further, since diaphragm 108 can be by ripple Unabsorbed major part exciting light (such as blue light) in long switch region (such as gold-tinted switch region 102b) Block, then through the polarizer 104 a part of exciting light of transmission, so that finally export is stimulated The exciting light comprised in light is very little, it is to avoid the exciting light impact on the purity of the stimulated luminescence of output, Substantially increase the excitation of the stimulated luminescence of output.

It should be noted that due to above-mentioned polarizer 104, diaphragm 108, quarter wave plate 107 and first The version of optical filter 105 and act as prior art, and be well known to those skilled in the art, Therefore the present invention repeats no more.

For convenience of explanation, below the exciting light sent from excitation source 101 is referred to as L0 light, will be through The stimulated luminescence of the first optical filter 105 reflection is referred to as L1 light, and by swashing of reflecting through polarizer 104 Luminous referred to as L2 light.

When reality is applied, L1 light can be changed by adjusting the angle of inclination of the first optical filter 105 Exit direction, in like manner, changes the exit direction of L2 light by adjusting the angle of inclination of polarizer 104, Such as when the angle of inclination of the first optical filter 105 and polarizer 104 is 45 °, i.e. first filters Sheet 105 and polarizer 104 are parallel to each other, and thus L1 light is identical with the exit direction of L2 light, with L0 Light is mutually perpendicular to.Clearly for the light channel structure using L1 light and L2 light to be respectively perpendicular with L0 light respectively, The inner space of light supply apparatus 100 can be saved further, be conducive to reducing the volume of light supply apparatus 100. Should be appreciated that in other embodiments, the angle of inclination of the first optical filter 105 and polarizer 104 is also Can make specifically chosen according to required exit positions, such as any value, the present invention couple between 0~90 ° This is not restricted.

Further, light supply apparatus 100 also includes being arranged on the first optical filter 105 and Wavelength converter Collimating element 106 in light path between 102.L0 light is incident on the 102b of gold-tinted switch region, at wavelength It is excited to be converted to the stimulated luminescence of yellow band under the effect of transition material, simultaneously at material for transformation of wave length Effect this stimulated luminescence lower is approximate Lambertian distribution, and many that etendue quantitative change is big, this partially-excited is sent out Light reenters after collimating element 106 collimates and is incident upon the first optical filter 105, thus can reduce stimulated luminescence Loss, to improve output rating and the beam quality of L1 light.

It addition, the exciting light of reflection is scattering state from the 102b of yellow switch region, etendue amount increases Manyfold, after collimated device 106 collimation, the sectional area of this part exciting light increases accordingly, therefore The exciting light major part of reflection from the 102b of yellow switch region is stopped by diaphragm 108, thus greatly reduces L1 The exciting light of mixing in light, and then reduce the chromaticity coordinates of L1 light is impacted.When specifically applying, collimation Device 106 can be single element lens, it is also possible to the battery of lens being made up of multi-disc lens.

In the present embodiment, light supply apparatus 100 also includes being arranged on being subject to via the first optical filter 105 reflection On the light path upper reflector part 111 of exciting light and the light path via the exciting light of polarizer 104 reflection Second optical filter 112.As it is shown in figure 1, reflection device 111 and the first optical filter 105 are just to setting, the Two optical filters 112 are with polarizer 104 just to setting, and reflection device 111 can be reflecting mirror, it is also possible to It is optical filter, if reflection device 111 is optical filter, then can be selected for the filter identical with the first optical filter 105 Mating plate, thus can be reflected L1 light by preset path, and the second optical filter 112 and the first optical filter 105 Spectral-transmission characteristics and differ, but the second optical filter 112 and the first optical filter 105 may each be Having dichroic, the second optical filter 112 can reflect the exciting light via polarizer 104 reflection, And for the stimulated luminescence transmission of reflection device 111 reflection.Thus, by arranging reflection device 111 and second Optical filter 112, thus light supply apparatus 100 can penetrate the white light being made up of L1 light and L2 light.

Additionally, light supply apparatus 100 also includes the 3rd optical filter 109 and/or diffusion sheet 110, can only set Put the 3rd optical filter 109 or diffusion sheet 110, it is also possible to the 3rd optical filter 109 and diffusion sheet is set simultaneously 110, can select flexibly during concrete application.As it is shown in figure 1, to arrange the 3rd optical filter 109 and to expand simultaneously As a example by discrete piece 110, the 3rd optical filter 109 is arranged between the first optical filter 105 and reflection device 111 In light path, by the 3rd optical filter 109 is arranged between the first optical filter 105 and reflection device 111, The excitation of yellow band light, and then HONGGUANG and the excitation of green glow when improving Projection Display can be improved. It is preferred that when Wavelength converter 102 is for structure shown in Fig. 5, the 3rd optical filter 109 is preferably and falls into Ripple optical filter (Notch filter), by arranging the 3rd optical filter 109 in the output light path of stimulated luminescence, Can filter producing the light of intersection in red band light and green band light, so that red band light Higher with the excitation of green band light.Diffusion sheet 110 is arranged on polarizer 104 and the second optical filter In light path between 112, by diffusion sheet 110 being arranged on polarizer 104 and the second optical filter 112 Between, the L2 light diffusion that can will concentrate, form a uniform area source.

See Fig. 2 and Fig. 5, in a second embodiment, this light supply apparatus 200 include excitation source 201, Wavelength converter 202, drive Wavelength converter 202 rotate driving means 203, polarizer 204, Polarization conversion assembly P and filter set S, wherein polarization conversion assembly P includes diaphragm 209 and quarter wave plate 208, the arrangement form of diaphragm 209 and quarter wave plate 208 can refer to the optical rotation in above-mentioned first embodiment Change the detailed description of assembly P.

The light supply apparatus 200 of the present embodiment is with the difference of the light supply apparatus 100 shown in Fig. 1: Wavelength-converting region can produce the stimulated luminescence of two kinds of different wave lengths, such as Wavelength converter 202 and include Echo area 202a, HONGGUANG switch region 202b and green glow switch region 202c, namely by wavelength convert Division For peripherally disposed two sections, by being excited generation red band light and green band light;Correspondingly, Filter set S includes two tablet filters, is fourth optical filter 205 corresponding with HONGGUANG switch region 202b respectively And fiveth optical filter 206 corresponding with green glow switch region 202c, the 4th optical filter 205 and the 5th optical filter The spectral-transmission characteristics of 206 differs, and the 4th optical filter 205 reflects is excited to produce by HONGGUANG switch region 202b Raw red band light (i.e. first band light), and transmission exciting light and green glow switch region 202c are excited to produce Raw green band light (i.e. second band light);5th optical filter 206 reflects by green glow switch region 202c Be excited produce green band light, and transmission exciting light and HONGGUANG switch region 202b be excited produce red ripple Duan Guang.Along with the rotation of Wavelength converter 202, wherein,

By anti-when the stimulated luminescence produced by HONGGUANG switch region 202b excitation is incident on the 4th optical filter 205 Penetrate;

By anti-when the stimulated luminescence produced by green glow switch region 202c excitation is incident on the 5th optical filter 206 Penetrate.

Thus, no matter it is that HONGGUANG switch region 202b encourages the red band light produced, or green conversion district The green band light that 202c excitation produces, its light path all can separate with the light path of exciting light.

Similar with above-mentioned first embodiment, in order to realize closing light, the light supply apparatus 200 of the present embodiment is also Including be arranged on via the 4th optical filter 205 reflection stimulated luminescence light path upper reflector part 211, via 5th optical filter 206 reflection stimulated luminescence light path on the 6th optical filter 212 and via polarizer The 7th optical filter 213 in the light path of the exciting light of 204 reflections.Wherein, the 6th optical filter 212 reflects warp The stimulated luminescence reflected by the 5th optical filter 206, and the stimulated luminescence of Transflective device 211 reflection; 7th optical filter 213 reflects the exciting light via polarizer 204 reflection, and transmission the 6th optical filter 212 Transmission and the stimulated luminescence of reflection.Reflection device 211 can be reflecting mirror, it is also possible to be optical filter, and Select to reduce cost during reflecting mirror.Further, the 4th optical filter the 205, the 5th optical filter the 206, the 6th filter Mating plate 212 and the 7th optical filter 213 can be to have dichroic optical filter, it is to avoid because absorbing heat And causing fusing or the problem of deformation, reliability is higher.

It is noted that the red band light being excited to produce can be carried out at least through the 4th optical filter 205 Repairing color, the green band light being excited to produce can be carried out by the 5th optical filter 206 and the 6th optical filter 212 Repair color, and when reflection device 211 is to have dichroic optical filter, it can also be to red band Light carries out repairing color, after thus improving red band light and the excitation of green band light, and then raising conjunction light The excitation of yellow band light.

Additionally, light supply apparatus 200 also includes being arranged between polarizer 204 and the 7th optical filter 213 Light path on diffusion sheet 210, the exciting light diffusion that this diffusion sheet 210 can be concentrated, is formed one equal Even area source.And, light supply apparatus 200 also includes being arranged on the 4th optical filter 205 and wavelength convert Collimating element 207 in light path between device 202, its effect can refer to the detailed of above-mentioned collimating element 106 Describe in detail bright.

Seeing Fig. 3, technical scheme based on above-mentioned second embodiment proposes the 3rd embodiment, specifically, light Source apparatus 300 mainly includes excitation source 301, Wavelength converter 302, drives Wavelength converter 302 Rotate driving means 303, polarizer 304, diaphragm 309, quarter wave plate 308, collimating element 307, Diffusion sheet 310 and filter set S.The difference of the second embodiment and the 3rd embodiment is the filter of the present embodiment Mating plate group S only includes one the 8th optical filter 305, also will above-mentioned 4th optical filter 205 and the 5th optical filter The effect of 206 is integrated, and the 8th optical filter 305 reflects to be encouraged by HONGGUANG switch region or green glow switch region and produces Raw stimulated luminescence, and transmission exciting light.Compared to the arrangement form of optical element in the second embodiment, The present embodiment efficiently reduces light source dress in the case of realizing sending red band light and green band light Putting the volume of 300, overall structure is compacter.

Meanwhile, in order to realize closing light, the light supply apparatus 300 of the present embodiment also includes being arranged on via the 8th The light path upper reflector part 311 of stimulated luminescence of optical filter 305 reflection and reflecting via polarizer 304 Exciting light light path on the 9th optical filter 312, reflection device 311 can be by red band light and green ripple Duan Guang is respectively facing the reflection of same direction, and the 9th optical filter 312 reflects via polarizer 304 reflection Exciting light, and transmission red band light and green band light, actually transmission yellow band light.Compare In above-mentioned second embodiment, the present embodiment also saves the 6th optical filter 212, thus can reduce cost, with The reliability of Shi Tigao system.

It is noted that with reference to the light supply apparatus 100 of above-mentioned first embodiment, it is also possible at stimulated luminescence Transmission light path in optical filter is set, this optical filter be positioned at the 8th optical filter 305 and reflection device 311 it Between, to improve the excitation of stimulated luminescence.Such as, select notch filtering light sheet (Notch filter), permissible Filter producing the light of intersection in red band light and green band light, so that red band light and green The excitation of color band of light is higher.

Technical scheme according to embodiments of the present invention, by between excitation source and Wavelength converter The light splitting dress being made up of optical elements such as polarizer, polarization conversion assembly, filter set is set in light path Put, it is thus possible to exciting light is separated with the light path of stimulated luminescence, compared to prior art without arranging Filter wheel can filter exciting light in stimulated luminescence, has that overall structure is simple, arrangement form is compact, raw Produce low cost and high reliability, and the fluorescence spectrum being excited to produce can also be pruned, greatly Improve out greatly light color quality.

The present invention also provides for a kind of optical projection system, in one embodiment, this optical projection system include light supply apparatus, Display element, light source-side optical device, projection-side optical device and control device etc., wherein light supply apparatus Use the light supply apparatus in the various embodiments described above, and remaining part is prior art.

This optical projection system embodiment includes whole technical schemes of the whole embodiment of above-mentioned light supply apparatus, is reached The technique effect arrived is the most identical, does not repeats them here.

These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.

Claims (13)

1. a light supply apparatus, including for producing the excitation source of exciting light and being arranged on described exciting light Propagation light path in Wavelength converter, it is characterised in that described Wavelength converter includes echo area And wavelength-converting region, described wavelength-converting region has for the exciting light of reception is converted into preset wavelength The material for transformation of wave length of stimulated luminescence, described light supply apparatus also includes:
The polariser being successively set in the light path between described excitation source and described Wavelength converter Part, polarization conversion assembly and filter set, wherein:
Described polarizer transmission has the light of the first polarization state, and reflects the light with the second polarization state, Described first polarization state is identical with the polarization state of described exciting light, and described second polarization state is first inclined with described Polarization state is vertical;
Described polarization conversion assembly will have the light twice of a kind of polarization state after described polarization conversion assembly It is converted into the light of the another kind of polarization state vertical with described a kind of polarization state;
Exciting light described in described filter set transmission, and reflect described stimulated luminescence.
2. light supply apparatus as claimed in claim 1, it is characterised in that described excitation source is for producing indigo plant The blue light solid state light emitter of color band of light.
3. light supply apparatus as claimed in claim 1, it is characterised in that described polarization conversion assembly includes Quarter wave plate and diaphragm, described quarter wave plate is wholely set with described diaphragm;Or, described quarter wave plate with Described diaphragm split is arranged, and described quarter wave plate or described diaphragm are arranged adjacent to described polarizer.
4. light supply apparatus as claimed in claim 1, it is characterised in that described filter set includes one the One optical filter, the stimulated luminescence that described first optical filter reflection described wavelength-converting region excitation produces, and thoroughly Penetrate the exciting light that described excitation source produces.
5. light supply apparatus as claimed in claim 4, it is characterised in that described light supply apparatus also includes: It is arranged on the reflection device in the light path of the stimulated luminescence via described first optical filter reflection;With,
The second optical filter in the light path of the light reflected via described polarizer, described second optical filter is anti- Penetrate the light reflected via described polarizer, and the stimulated luminescence of reflection device reflection described in transmission.
6. light supply apparatus as claimed in claim 5, it is characterised in that described light supply apparatus also includes the Three optical filters and/or diffusion sheet, described 3rd optical filter is arranged on described first optical filter and described reflector In light path between part, described diffusion sheet is arranged between described polarizer and described second optical filter In light path.
7. light supply apparatus as claimed in claim 1, it is characterised in that described filter set includes:
4th optical filter, the first band light in the described 4th optical filter described stimulated luminescence of reflection, and thoroughly Penetrate the second band light in described exciting light and described stimulated luminescence;
5th optical filter, the second band light in the described 5th optical filter described stimulated luminescence of reflection, and thoroughly Penetrate described exciting light.
8. light supply apparatus as claimed in claim 7, it is characterised in that described light supply apparatus also includes:
It is arranged in the light path of the first band light in the stimulated luminescence via described 4th optical filter reflection Reflection device;
It is arranged in the light path of the second band light in the stimulated luminescence via described 5th optical filter reflection 6th optical filter, in the described 6th optical filter reflection stimulated luminescence via described 5th optical filter reflection First band light in second band light, and the stimulated luminescence of reflection device reflection described in transmission;With,
It is arranged on the 7th optical filter in the light path of the light reflected via described polarizer, described 7th filter Mating plate reflects the light reflected via described polarizer, and transmission being subject to via described 6th optical filter reflection Second band light in exciting light and via the first band in the stimulated luminescence of described 6th filter transmission Light.
9. light supply apparatus as claimed in claim 8, it is characterised in that described light supply apparatus also includes setting Put the diffusion sheet in the light path between described polarizer and described 7th optical filter.
10. the light supply apparatus as according to any one of claim 4 to 9, it is characterised in that described ripple Long switch region is gold-tinted switch region;Or, described wavelength-converting region is divided into two sections, is circumferentially respectively The HONGGUANG switch region of direction setting and green glow switch region.
11. light supply apparatuses as claimed in any one of claims 1-9 wherein, it is characterised in that described instead Penetrating district is direct reflection district.
12. light supply apparatuses as claimed in any one of claims 1-9 wherein, it is characterised in that described light Source apparatus also includes the collimation being arranged in the light path between described filter set and described Wavelength converter Device.
13. 1 kinds of optical projection systems, it is characterised in that include according to any one of claim 1 to 12 Light supply apparatus.
CN201510184672.7A 2015-04-17 2015-04-17 Light supply apparatus and there is its optical projection system CN106154717B (en)

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CN108957733A (en) * 2018-07-24 2018-12-07 苏州佳世达电通有限公司 Fluorescence colour wheel and projector with reflecting element
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CN106647126A (en) * 2016-12-27 2017-05-10 苏州佳世达光电有限公司 Light source apparatus and projection apparatus
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CN110764349A (en) * 2019-10-14 2020-02-07 明基智能科技(上海)有限公司 Projection system

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